A characteristic or description of a substance that may help you to identify it.
What is a physical property?
100
Baking bread.
What is a chemical change?
100
The mass of a substance is 20g. The volume of a substance is 5ml. The density is______.
What is 4g/ml?
100
The slow chemical change that occurs when a metal reacts with oxygen from the air to form a new substance called an oxide.
What is corrosion?
100
Anything that takes up space and has mass.
What is matter?
200
This property is being described when you say that a quarter is shiny.
What is lustre?
200
Dissolving salt in water.
What is a physical change?
200
The density of a substance is 25g/ml. The mass of a substance is 50g. The volume is_________.
What is 2ml?
200
One method is to paint the surface of the metal.
What is one method to prevent corrosion?
200
Pigment, resin, and solvent.
What are the three components of paint?
300
When magnesium metal is added to acid, it produces bubbles of gas and the metal disappears. This is describing a ____________ property.
What is a chemical property?
300
Bleaching a stain.
What is a chemical change?
300
The density of a substance is 60g/cm3. The volume of a substance is 3cm3. The mass is__________.
What is 180g?
300
A substance reacts rapidly with oxygen and releases energy. The energy is observed as heat and light.
What is combustion?
300
This paint is strong and durable.
What is alkyd paint?
400
This property is being described when a substance is brought close to an open flame and it ignites and burns.
What is combustibility or flammability?
400
A ceramic plate falls on the floor and smashes.
What is a physical change?
400
Mas per unit volume.
What is density?
400
Oxygen, fuel and heat.
What are the three components of any combustion reaction?
400
This paint dries quickly and you can use water to clean the brushes and rollers.
What is latex paint?
500
Dissolving or solubility is an example of this type of property.
What is a physical property?
500
A candle burning.
What is a chemical and physical change?
500
If you increase the volume of a substance you increase the density. True or false.
What is false?
500
Coal, oil, natural gas and gasoline.
What are fossil fuels?
500
A new color appears, heat or light is given off, bubbles of gas are formed, a solid material called a precipitate is formed in a liquid and the change is difficult to reverse.
What are signs that a chemical change has happened?